IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Which country shares the longest border with China? 1795 05b5cc62ce4d2b4197774b917
5b5cc62ce4d2b4197774b917- 1Indiafalse
- 2Russiafalse
- 3Mongoliatrue
- 4Kazakhstanfalse
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उत्तर : 3. "Mongolia"
व्याख्या :
Answer: C) Mongolia Explanation: China shares land borders with 14 different countries, the longest being with Mongolia followed by Russia and then India.
प्र: Peacock : India :: Bear : ? 1795 05b5cc699e4d2b4197774c71f
5b5cc699e4d2b4197774c71f- 1Englandfalse
- 2Americafalse
- 3Russiatrue
- 4Africafalse
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उत्तर : 3. "Russia"
व्याख्या :
Answer: C) Russia Explanation: Here the relation between the given words is that the first word is the National animal of the second word. As Peacock is the national bird of India, similarly Bear is the national animal of Russia. Hence, Peacock : India :: Bear : Russia.
प्र: Which property would be classified as expendable? 1794 05b5cc622e4d2b4197774b7f3
5b5cc622e4d2b4197774b7f3- 1Food given to Armyfalse
- 2Cementfalse
- 3Paintfalse
- 4All of the abovetrue
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उत्तर : 4. "All of the above"
व्याख्या :
Answer: D) All of the above Explanation: Expendable properties are those properties that are consume in use or that lose their identity in use. It also include those properties that become an integral part of other property when put to use and those properties which have an expected service life of less than one year.
प्र: Six friends A, B, C, D, E and F joined an institute in the year 1993 but on different days. Only E has joined after C and D. C joined immediately before A and immediately after B. F is not the first or the last person to join. D will not be in any corner.Who is the first person joining the Institute? 1794 05b5cc715e4d2b4197774f46d
5b5cc715e4d2b4197774f46d- 1Efalse
- 2Dfalse
- 3Afalse
- 4Btrue
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उत्तर : 4. "B"
व्याख्या :
Answer: D) B Explanation: The only possible way is BCAFDEAs D & F is not in any corner and E is after C and D. C is after B and before ASo the first person to join the institute is B
प्र: 12% of 70,000 is 1793 05b5cc622e4d2b4197774b7df
5b5cc622e4d2b4197774b7df- 18400true
- 27200false
- 36000false
- 45600false
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उत्तर : 1. "8400"
व्याख्या :
Answer: A) 8400 Explanation: 12% of 70,000 => 12 x 70,000/100 => 8400 Hence, 12% of 70,000 = 8,400
प्र: Derivative of sinx by first principle? 1793 05b5cc6abe4d2b4197774d011
5b5cc6abe4d2b4197774d011- 1-sinxfalse
- 2-cosxfalse
- 3cosxtrue
- 4sinxfalse
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उत्तर : 3. "cosx"
व्याख्या :
Answer: C) cosx Explanation: Thus, the derivative of sinx by first principle is cosx.
प्र: Which Soil is Suitable for Agriculture? 1792 05b5cc6b4e4d2b4197774d4ed
5b5cc6b4e4d2b4197774d4ed- 1Alluvial Soilstrue
- 2Red Soilsfalse
- 3Sandy Soilsfalse
- 4Peaty Soilsfalse
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उत्तर : 1. "Alluvial Soils"
व्याख्या :
Answer: A) Alluvial Soils Explanation: 1. Each type of soil benefits different types of crops through their unique physical, chemical and biological properties. 2. Alluvial Soils are best suitable for Agriculture. This soil is a fertile soil which is rich in potassium. 3. It is best especially for crops such as paddy, sugarcane,...
प्र: What is a process whereby an Ecosystem can renew itself? 1792 05b5cc6abe4d2b4197774d01b
5b5cc6abe4d2b4197774d01b- 1Successiontrue
- 2Reconstructionfalse
- 3Cleansingfalse
- 4Purificationfalse
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उत्तर : 1. "Succession"
व्याख्या :
Answer: A) Succession Explanation: The process which wherein an Ecosystem may renew itself is known as Ecological Succession. The time scale may be decades or a million of years after a mass extinction. It may be achieve over a period of time.

